21217284797619729

Names of 21217284797619729

• Cardinal: 21217284797619729 can be written as Twenty-one quadrillion, two hundred seventeen trillion, two hundred eighty-four billion, seven hundred ninety-seven million, six hundred nineteen thousand, seven hundred twenty-nine.

Scientific notation

• Scientific notation: 2.1217284797619729 × 10¹⁶

Factors of 21217284797619729

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 217

Divisors of 21217284797619729

• Number of divisors d(n): 300
• Complete list of divisors:
  1 3 7 13 21 39 49 67 91 127 147 169 201 273 343 381 469 507 637 871 889 1029 1183 1407 1651 1911 2401 2613 2667 3283 3549 4459 4953 6097 6223 7203 8281 8509 9849 11323 11557 13377 16129 18291 18669 21463 22981 24843 25527 31213 33969 34671 42679 43561 48387 57967 59563 64389 68943 79261 80899 93639 110617 112903 128037 130683 150241 160867 173901 178689 209677 237783 242697 298753 304927 331851 338709 405769 416941 450723 482601 554827 566293 629031 774319 790321 896259 914781 1051687 1080643 1217307 1250823 1438021 1467739 1664481 1698879 2048383 2091271 2322957 2370963 2725801 2918587 3155061 3241929 3883789 3964051 4314063 4403217 5420233 5532247 6145149 6273813 7361809 7564501 8177403 8755761 10066147 10274173 11651367 11892153 14048359 14338681 16260699 16596741 19080607 20430109 22085427 22693503 26628979 27186523 30198441 30822519 37941631 38725729 42145077 43016043 51532663 52951507 57241821 61290327 70463029 71919211 79886937 81559569 98338513 100370767 113824893 116177187 133564249 137241661 154597989 158854521 182628667 186402853 211389087 215757633 260144641 265591417 295015539 301112301 346176727 370660549 400692747 411724983 493241203 503434477 547886001 559208559 688369591 702595369 780433923 796774251 934949743 960691627 1038530181 1111981647 1278400669 1304819971 1479723609 1510303431 1784141593 1821012487 2065108773 2107786107 2423237089 2594623843 2804849229 2882074881 3381880333 3452688421 3835202007 3914459913 4818587137 4918167583 5352424779 5463037461 6544648201 6724841389 7269711267 7783871529 8948804683 9133739797 10145640999 10358065263 12488991151 12747087409 14455761411 14754502749 16962659623 17429690947 19633944603 20174524167 23193840709 23673162331 26846414049 27401219391 33730109959 37466973453 38241262227 43964444329 47073889723 50887978869 52289072841 62641632781 63936178579 69581522127 71019486993 87422938057 89229611863 101190329877 118738617361 122007836629 131893332987 141221669169 162356884963 165712136317 187924898343 191808535737 226585982311 262268814171 267688835589 307751110303 329517228061 356215852083 366023509887 438491429467 487070654889 497136408951 611960566399 624607283041 679757946933 831170321527 854054856403 923253330909 988551684183 1136498194741 1159984954219 1315474288401 1586101876177 1835881699197 1873821849123 2154257772121 2493510964581 2562164569209 2945617770043 3409494584223 3479954862657 4283723964793 4758305628531 5978383994821 6462773316363 7955487363187 8119894679533 8836853310129 11102713133239 12851171894379 15079804404847 17935151984463 20619324390301 23866462089561 24359684038599 33308139399717 41848687963747 45239413214541 55688411542309 61857973170903 77718991932673 105558630833929 125546063891241 144335270732107 167065234626927 233156975798019 316675892501787 433005812196321 544032943528711 1010346895124749 1632098830586133 3031040685374247 7072428265873243 21217284797619729
• Sum of all divisors σ(n): 36557893408127856
• Sum of proper divisors (its aliquot sum) s(n): 15340608610508127
• 21217284797619729 is a deficient number, because the sum of its proper divisors (15340608610508127) is less than itself. Its deficiency is 5876676187111602

Bases of 21217284797619729

• Binary: 1001011011000010000001000010011011101011101111000010001₂
• Hexadecimal: 0x4B61021375DE11
• Base-36: 5SWWE2QFYFL

Squares and roots of 21217284797619729

• 21217284797619729 squared (21217284797619729²) is 450173174183305264589304090033441
• 21217284797619729 cubed (21217284797619729³) is 9551452444895661052644149706595111785308811357489
• The square root of 21217284797619729 is 145661541.9306679213
• The cube root of 21217284797619729 is 276840.6978379611

Scales and comparisons

• 21,217,284,797,619,729 seconds is equal to 674,644,027 years, 10 weeks, 9 hours, 2 minutes, 9 seconds.
• To count from 1 to 21,217,284,797,619,729 would take you about two billion, twenty-three million, nine hundred thirty-two thousand and eighty-one years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21217284797619729 cubic inches would be around 23070.1 feet tall.

Recreational maths with 21217284797619729

• 21217284797619729 backwards is 92791679748271212
• The number of decimal digits it has is: 17
• The sum of 21217284797619729's digits is 84
• More coming soon!